/*
 * Copyright 2015 Daniel Bechler
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package de.danielbechler.diff.identity

import spock.lang.Specification
import spock.lang.Unroll

class EqualsIdentityStrategyTest extends Specification {

	EqualsIdentityStrategy identityStrategy = EqualsIdentityStrategy.instance

	@Unroll
	def "equals(#a, #b) should be #equal"() {
		expect:
		  identityStrategy.equals(a, b) == equal

		where:
		  a     | b     || equal
		  null  | null  || true
		  null  | 'foo' || false
		  'foo' | 'bar' || false
		  'foo' | 'foo' || true
	}

	def "getInstance"() {
		expect:
		  EqualsIdentityStrategy.instance.is(identityStrategy)
	}
}
